How severe is CVE-2025-3755?

CVE-2025-3755 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2025-3755 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-3755?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-3755 have an EU (EUVD) identifier?

Yes. CVE-2025-3755 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16363.

When was CVE-2025-3755 published?

CVE-2025-3755 was published on 2025-05-29 and last updated on 2026-06-17.

CVE-2025-3755

CVE-2025-3755 is a critical-severity vulnerability with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1285.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16363
Weakness: CWE-1285
Published: 2025-05-29
Last modified: 2026-06-17

Description

Improper Validation of Specified Index, Position, or Offset in Input vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU modules allows a remote unauthenticated attacker to read information in the product, to cause a Denial-of-Service (DoS) condition in MELSOFT connection, or to stop the operation of the CPU module (causing a DoS condtion on the CPU module), by sending specially crafted packets. The product is needed to reset for recovery.

Frequently asked questions

What is CVE-2025-3755?: Improper Validation of Specified Index, Position, or Offset in Input vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series CPU modules allows a remote unauthenticated attacker to read information in the product, to cause a Denial-of-Service (DoS) condition in MELSOFT connection, or to stop the operation of the CPU module (causing a DoS condtion on the CPU module), by sending specially crafted packets. The product is needed to reset for recovery.
How severe is CVE-2025-3755?: CVE-2025-3755 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2025-3755 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-3755?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-3755 have an EU (EUVD) identifier?: Yes. CVE-2025-3755 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16363.
When was CVE-2025-3755 published?: CVE-2025-3755 was published on 2025-05-29 and last updated on 2026-06-17.

References

Other CWE-1285 vulnerabilities

CVE-2026-33557 — Critical (CVSS 9.1): A possible security vulnerability has been identified in Apache Kafka. By default, the broker property…
CVE-2026-12681 — High (CVSS 8.9): Improper Validation of Specified Index, Position, or Offset in Input vulnerability in Google go-attestation.…
CVE-2024-36342 — High (CVSS 8.8): Improper input validation in the GPU driver could allow an attacker to exploit a heap overflow potentially resulting in…
CVE-2025-20796 — High (CVSS 7.8): In imgsys, there is a possible out of bounds write due to improper input validation. This could lead to local…
CVE-2025-7849 — High (CVSS 7.8): A memory corruption vulnerability due to improper error handling when a VILinkObj is null exists in NI LabVIEW that may…
CVE-2025-7848 — High (CVSS 7.8): A memory corruption vulnerability due to improper input validation in lvpict.cpp exists in NI LabVIEW that may result…

Browse all CWE-1285 vulnerabilities →